Side rail for a bed



FIG. 1 is a perspective view of a side rail showing its profile as seen from the laterally outboard side of the side rail.

FIG. 2 is a perspective view of the side rail showing its profile as seen from the laterally inboard side of the side rail.

FIG. 3 is an outboard side elevation view of the side rail for a bed; and,

FIG. 4 is an inboard side elevation view of the side rail for a bed.

The broken lines are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a side rail for a bed, as shown and described. 